Pub Date : 2024-08-15DOI: 10.1038/s44286-024-00104-7
Taylor J. Woehl
The final structure of nanoparticle self-assembly intimately depends on the assembly pathway, which has remained obscure due to a lack of sufficiently high-spatiotemporal-resolution direct imaging approaches. Now, combining liquid-cell transmission electron microscopy with molecular dynamics simulations uncovers the complete dynamics of solvent-dependent assembly and phase transitions of nanocube superlattices.
{"title":"Illuminating pathways for nanoparticle superlattice self-assembly","authors":"Taylor J. Woehl","doi":"10.1038/s44286-024-00104-7","DOIUrl":"10.1038/s44286-024-00104-7","url":null,"abstract":"The final structure of nanoparticle self-assembly intimately depends on the assembly pathway, which has remained obscure due to a lack of sufficiently high-spatiotemporal-resolution direct imaging approaches. Now, combining liquid-cell transmission electron microscopy with molecular dynamics simulations uncovers the complete dynamics of solvent-dependent assembly and phase transitions of nanocube superlattices.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141986155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-15DOI: 10.1038/s44286-024-00100-x
Robert H. Davis
Robert H. Davis argues quantitatively how hiring more teaching faculty could boost both research and teaching.
罗伯特-H-戴维斯（Robert H. Davis）从数量上论证了聘用更多的教学人员如何促进研究和教学。
{"title":"A mathematical argument for teaching faculty","authors":"Robert H. Davis","doi":"10.1038/s44286-024-00100-x","DOIUrl":"10.1038/s44286-024-00100-x","url":null,"abstract":"Robert H. Davis argues quantitatively how hiring more teaching faculty could boost both research and teaching.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141986148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-14DOI: 10.1038/s44286-024-00113-6
Mo Qiao
{"title":"Timing the electricity market","authors":"Mo Qiao","doi":"10.1038/s44286-024-00113-6","DOIUrl":"10.1038/s44286-024-00113-6","url":null,"abstract":"","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141986136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-14DOI: 10.1038/s44286-024-00105-6
A protocol is demonstrated for the fabrication of dense and defect-free graphene current collectors on the hundred-meter scale. Owing to their high thermal conductivity and dense structures, these current collectors effectively prevent thermal runaway in high-energy pouch cells through the dissipation of localized heat and circumvention of undesirable side reactions, enhancing battery safety.
{"title":"Scalable graphene current collectors for enhanced thermal management in batteries","authors":"","doi":"10.1038/s44286-024-00105-6","DOIUrl":"10.1038/s44286-024-00105-6","url":null,"abstract":"A protocol is demonstrated for the fabrication of dense and defect-free graphene current collectors on the hundred-meter scale. Owing to their high thermal conductivity and dense structures, these current collectors effectively prevent thermal runaway in high-energy pouch cells through the dissipation of localized heat and circumvention of undesirable side reactions, enhancing battery safety.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141986129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-14DOI: 10.1038/s44286-024-00111-8
Yanfei Zhu
{"title":"A refuel for heavy-duty transportation","authors":"Yanfei Zhu","doi":"10.1038/s44286-024-00111-8","DOIUrl":"10.1038/s44286-024-00111-8","url":null,"abstract":"","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141986140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-14DOI: 10.1038/s44286-024-00120-7
In this Editorial, we discuss how a broad chemical engineering journal can serve the community.
在这篇社论中，我们将讨论一份内容广泛的化学工程期刊如何为社会服务。
{"title":"Chemical engineering, broadly speaking","authors":"","doi":"10.1038/s44286-024-00120-7","DOIUrl":"10.1038/s44286-024-00120-7","url":null,"abstract":"In this Editorial, we discuss how a broad chemical engineering journal can serve the community.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44286-024-00120-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141986152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-14DOI: 10.1038/s44286-024-00109-2
Alessio Lavino
{"title":"A chemical reservoir computer","authors":"Alessio Lavino","doi":"10.1038/s44286-024-00109-2","DOIUrl":"10.1038/s44286-024-00109-2","url":null,"abstract":"","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141986150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-07DOI: 10.1038/s44286-024-00092-8
Wilhelm T. S. Huck
The rates of all enzymatic reactions vary with temperature. Now, it is shown how this temperature sensitivity can be exploited to construct oscillating reaction networks that are able to detect temperature changes with remarkable precision.
{"title":"Oscillating chemical reaction networks stopped cold","authors":"Wilhelm T. S. Huck","doi":"10.1038/s44286-024-00092-8","DOIUrl":"10.1038/s44286-024-00092-8","url":null,"abstract":"The rates of all enzymatic reactions vary with temperature. Now, it is shown how this temperature sensitivity can be exploited to construct oscillating reaction networks that are able to detect temperature changes with remarkable precision.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141986151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-07DOI: 10.1038/s44286-024-00087-5
N. Lobato-Dauzier, A. Baccouche, G. Gines, T. Levi, Y. Rondelez, T. Fujii, S. H. Kim, N. Aubert-Kato, A. J. Genot
Complex organisms perceive their surroundings with sensory neurons that encode physical stimuli into spikes of electrical activities. The past decades have seen a throve of computing approaches taking inspiration from neurons, including reports of DNA-based chemical neurons that mimic artificial neural networks with chemical reactions. Yet, they lack the physical sensing and temporal coding of sensory biological neurons. Here we report a thermosensory chemical neuron based on DNA and enzymes that spikes with chemical activity when exposed to cold. Surprisingly, this chemical neuron shares deep mathematical similarities with a toy model of a cold nociceptive neuron: they follow a similar bifurcation route between rest and oscillations and avoid artefacts associated with canonical bifurcations (such as irreversibility, damping or untimely spiking). We experimentally demonstrate this robustness by encoding—digitally and analogically—thermal messages into chemical waveforms. This chemical neuron could pave the way for implementing the third generation of neural network models (spiking networks) in DNA and opens the door for associative learning. Complex organisms perceive their surroundings with sensory neurons that encode physical stimuli into spikes of electrical activities. Here a thermosensory chemical neuron based on DNA and enzymes has been reported, which spikes with chemical activity when exposed to cold.
复杂的生物体通过感觉神经元感知周围环境，这些神经元将物理刺激编码为尖峰电活动。过去几十年来，从神经元中汲取灵感的计算方法层出不穷，其中包括利用化学反应模拟人工神经网络的 DNA 化学神经元。然而，它们缺乏生物感知神经元的物理传感和时间编码。在这里，我们报告了一种基于DNA和酶的热感化学神经元，当暴露在寒冷环境中时，它的化学活性会出现尖峰。令人惊讶的是，这种化学神经元与冷痛觉神经元的玩具模型在数学上有很深的相似之处：它们在静止和振荡之间遵循相似的分岔路线，并避免了与典型分岔相关的伪现象（如不可逆、阻尼或不适时尖峰）。我们通过将数字和模拟热信息编码成化学波形，在实验中证明了这种鲁棒性。这种化学神经元可为在 DNA 中实现第三代神经网络模型（尖峰网络）铺平道路，并为联想学习打开大门。复杂生物通过感觉神经元感知周围环境，这些神经元将物理刺激编码为尖峰电活动。这里报告的是一种基于 DNA 和酶的热感化学神经元，当暴露在寒冷环境中时，这种神经元会产生尖峰化学反应。
{"title":"Neural coding of temperature with a DNA-based spiking chemical neuron","authors":"N. Lobato-Dauzier, A. Baccouche, G. Gines, T. Levi, Y. Rondelez, T. Fujii, S. H. Kim, N. Aubert-Kato, A. J. Genot","doi":"10.1038/s44286-024-00087-5","DOIUrl":"10.1038/s44286-024-00087-5","url":null,"abstract":"Complex organisms perceive their surroundings with sensory neurons that encode physical stimuli into spikes of electrical activities. The past decades have seen a throve of computing approaches taking inspiration from neurons, including reports of DNA-based chemical neurons that mimic artificial neural networks with chemical reactions. Yet, they lack the physical sensing and temporal coding of sensory biological neurons. Here we report a thermosensory chemical neuron based on DNA and enzymes that spikes with chemical activity when exposed to cold. Surprisingly, this chemical neuron shares deep mathematical similarities with a toy model of a cold nociceptive neuron: they follow a similar bifurcation route between rest and oscillations and avoid artefacts associated with canonical bifurcations (such as irreversibility, damping or untimely spiking). We experimentally demonstrate this robustness by encoding—digitally and analogically—thermal messages into chemical waveforms. This chemical neuron could pave the way for implementing the third generation of neural network models (spiking networks) in DNA and opens the door for associative learning. Complex organisms perceive their surroundings with sensory neurons that encode physical stimuli into spikes of electrical activities. Here a thermosensory chemical neuron based on DNA and enzymes has been reported, which spikes with chemical activity when exposed to cold.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44286-024-00087-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141986154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-06DOI: 10.1038/s44286-024-00102-9
Yaxu Zhong, Timothy C. Moore, Tobias Dwyer, Alex Butrum-Griffith, Vincent R. Allen, Jun Chen, Yi Wang, Fanrui Cheng, Sharon C. Glotzer, Xingchen Ye
Nanoparticle self-assembly offers a scalable and versatile means to fabricate next-generation materials. The prevalence of metastable and nonequilibrium states during the assembly process makes the final structure and function directly dependent upon formation pathways. However, it remains challenging to steer the assembly pathway of a nanoparticle system toward multiple superstructures while visualizing in situ. Here we use liquid-cell transmission electron microscopy to image complete self-assembly processes of gold nanocubes, a model shape-anisotropic nanocolloidal system, into distinct superlattices. Theoretical analysis and molecular dynamics simulations indicate that the electrostatic screening of the medium dictates self-assembly pathways by its effects on the interactions between nanocubes. We leverage this understanding to demonstrate on-the-fly control of assembly behavior through rapid solvent exchange. Our joint experiment–simulation–theory investigation paves the way for elucidating the relationships among building block attributes, assembly pathways and superstructures in nanoscale assembly and opens new avenues for the bottom-up design of reconfigurable and adaptive metamaterials. Guiding the assembly pathway of a nanoparticle system toward multiple superstructures while visualizing in situ remains challenging. Here the authors combine liquid-cell transmission electron microscopy, scaling theory and molecular dynamics simulations to image and quantify self-assembly processes of gold nanocubes into distinct superlattices.
{"title":"Engineering and direct imaging of nanocube self-assembly pathways","authors":"Yaxu Zhong, Timothy C. Moore, Tobias Dwyer, Alex Butrum-Griffith, Vincent R. Allen, Jun Chen, Yi Wang, Fanrui Cheng, Sharon C. Glotzer, Xingchen Ye","doi":"10.1038/s44286-024-00102-9","DOIUrl":"10.1038/s44286-024-00102-9","url":null,"abstract":"Nanoparticle self-assembly offers a scalable and versatile means to fabricate next-generation materials. The prevalence of metastable and nonequilibrium states during the assembly process makes the final structure and function directly dependent upon formation pathways. However, it remains challenging to steer the assembly pathway of a nanoparticle system toward multiple superstructures while visualizing in situ. Here we use liquid-cell transmission electron microscopy to image complete self-assembly processes of gold nanocubes, a model shape-anisotropic nanocolloidal system, into distinct superlattices. Theoretical analysis and molecular dynamics simulations indicate that the electrostatic screening of the medium dictates self-assembly pathways by its effects on the interactions between nanocubes. We leverage this understanding to demonstrate on-the-fly control of assembly behavior through rapid solvent exchange. Our joint experiment–simulation–theory investigation paves the way for elucidating the relationships among building block attributes, assembly pathways and superstructures in nanoscale assembly and opens new avenues for the bottom-up design of reconfigurable and adaptive metamaterials. Guiding the assembly pathway of a nanoparticle system toward multiple superstructures while visualizing in situ remains challenging. Here the authors combine liquid-cell transmission electron microscopy, scaling theory and molecular dynamics simulations to image and quantify self-assembly processes of gold nanocubes into distinct superlattices.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141986143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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